John Christy: Climate Change Overview in Six Slides

A mixed panel of warmistas and skeptics featured Marc Marano of Climate Depot, Scott Denning of Colorado State University, Jim Hurrell of the National Center for Atmospheric Research, Joe Casola of the Center for Climate and Energy Solutions, Annie Petsonk of Environmental Defense Fund, Myron Ebell of the Competitive Enterprise Institute, Dennis Avery of the Hudson Institute, and John Christy of the University of Alabama in Huntsville, who participated by satellite link.

I emailed Dr. Christy and asked for permission to post his presentation on GlobalWarming.Org; he promptly sent me the files.

Dr. Christy’s Power Point presentation is available here. The accompanying text is available here. The main takeaway points:

Popular scare stories that weather extremes – hurricanes, tornadoes, droughts, floods — are getting worse are not based on fact.

In the U.S., high temperature records are not becoming more numerous.

Climate models significantly overestimated warming during the past 15 years.

Even if climate models were correct, a 50% reduction in U.S. CO2 emissions by 2050 would avert only 0.07°C of warming by 2100.

If a policy is not economically sustainable, it’s not politically sustainable.

The climate change impact of enhancing CO2 concentrations has so far been small compared to the public health and biospheric benefits provided by affordable, carbon-based energy.